Removing The Contract Sensor Home Position Sensor; Original Size Sensor; Removing The Reader Rear Cover - Canon iR4570 Series Service Manual

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When removing the ADF reading glass, take care not
to touch the glass surface.The presence of dirt can
cause white/black lines in the images. If dirt is found,
be sure to clean it using lint-free paper moistened with
alcohol.
5.4.6.3 Removing the Contract
Sensor Home Position Sensor
iR2270 / iR2870 / iR3570 / iR4570
1) Pull the drive belt [1] in the direction of the arrow
so that the contact image sensor (CIS) [2] is where
indicated in the figure.
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2) Disconnect the connector [1], and remove the CIS
home position sensor [3].
When detaching the sensor, do so as if to push it
under the claw [2] found at the rear.
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After replacing the sensor, pull the drive belt (rear) [1]
in the direction of the arrow so that the contact image
sensor (CIS) [2] is returned to the farthest left.
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5.4.7 Original Size Sensor

5.4.7.1 Removing the Reader
Rear Cover
iR2270 / iR2870 / iR3570 / iR4570
1) Disconnect the ADF communications cable [1] (if
equipped with an ADF)
Chapter 5
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